Biaha



useful Improvements ,fibrous material suitable for use as a substid felted, or

'SIGNOBS TO RUBBER GENERATING- COMP,

DIANA.

To all whom it may concern:

Be it how that'we, WInLIAM B. Wmeaun and WALTER Urrnrmn, both subjects of the, King of Great Britain, residing at Montreal, Province of Quebec, Dominion of Canada,

been impregnated with various compositions for the purpose of increasing their stifi'ness and wear-resistant qualities. It has been found however, that materials produced in accordance with the previous y known meth: ods do not possess as high a degree of porosity and power of transpiration'as is desire able where such material is used as or insoles for footwear; for which purpose it is particularly important that the material; have suficient porosity and power of trans piration to carry away freely the perspiration of the foot.

The disadvantages measure to the fact compositions reviously used have acted to completely the interstices and pores in the fibrous material, rendering it substantially impervious to the passage of air and moisture.

ln'some instances paint p' ents have been mixed with the im regnatmg composi-' tions for the purpose 0 impart various shades or colors to the material. uch pig-1 ments act to fill the pores in the materia thus destro its permeability.

An object o the present rovide a fibrous material imingly is to p pregnated with a composition impartm in-' creased stifinessand wear resistant qua ties' to the material without sacrificing the flexi bility and permeability and wnsequently the. transpiratory qualifies thereof.

Afurther object of the present invention. isto' impart any desired -base by the use of a dye, the use of a paint pregnate such base with a composition which 1 increase to the extent its stilf ness and wear qualities thereby avoiding- IB. 'W'IEG'AZND AND WALTER UFFELMAN, 0'! MONTH IEPBEGNATED BOUS immn Specification of Letters Patent. Ap'plicetlonfiled latch '23, 1918. Serial No. 24,389.

V ed substantially as follows brown Japan noted are .due in'a large that the impregnating invention aec0rd-' color to a fibrous pigment and to then ima.

and at-the onnnnc, cannon, n conrona'rmnon m- Patented Sept. so, are,

product ha same time produce a finished flexibility, pera hi her degree of elasticity,

mea ility, and power of transpiration than that possessed by materials produce treating similar bases by the previously known methods;

This invention applies both to the recess of preparing the material and to t e ma terial itself as an article of manufacture.

Any suitable fibrous base may be employed, for example Mitted, woven, braided, other fibrous structure, but for the ose of olearness the description is conw e to the treatment of felt.

In practising the invention, the impregnating composition is first prepared. One composition that has given very satisfactory results for impregnating felt to be used as insoles for footwear is compound- 51 pounds 9 ounces of resin are'melted up with one gallon of linseed oil. The resulting solution. is then ,thinned with 25 gallons of 67-70 lBaum gasolene. To the resulting-solution is then added one pint of drier.

Another way of preparing the composi tion is as follows Y A'solution consisting of 511 pounds 9 ounces of resin and 25 gallons of68-70 Baum gasolene is first prepared. To this a quantity of dby.

solution is then added one on oflinseed I oil and one pint of brown 1 an drier.

It is to be understood that the impregnat I ing compositions described have been set and that forth merely by way of illustration, the nature thereof may be considerably changed by varying the proportions and mgredients used, without departing from the spirit and scope of our invention.

After the compos'tion. has been prepared it is applied in a manner to thoroughly impregnate the felt. be used for the purpose, for example, the felt may be immersed in the composition and then passed through squeeze rollers to remove any surplus. When the felt has been suitably impregnated it is dried by subjecting it to a heat of from 200 to 220 F. for

" a period of approximately 45 minutes. The

Any suitable means may composition forms a filmiform coating around the individual fibers of the base impervious to the passage of the dye, which feature is particularly important in material used for insoles, as it protects the hoisery' of the wearer against the undesirable staining that has resulted where pigment colored materials have been used. The use of a dye instead of a pigment also efiects a substantial reduction in the weight and cost of the completed product.

he material prepared by the described process possesses many of the desirable properties of leather, and is partlcularly characterized by its high degree of porosity and power of transpiration.

Another advantage of the material adapting it for use as insoles that it will hold rubber cement very tenaciously thereby obviating the necessity of using a rag backing which has been required with certain other impregnated materials heretofore used.

It has also been found that insoles made of the material will soften sufiiciently under vulcanizing temperature to permit them to readily conform to the shape of the lasts to which they are applied thereby obviating the unsightly appearance and discomfort to the foot arising from the retentionof the sharp edges, which characterize leather and impregnating treated felt insoling manufactured accord-- ing tothe previously known methods.

A further advantage possessed by insoles made of the material is that they yield sufficiently under the warmth and pressure of the foot to provide a comfortable, elastic cushion therefor.

An additional advantageous feature of the improved material is its extremely light weight, which feature permits a desirable reduction to be effected in the weight of footwear and results in a substantial economy in the cost of transportation and factory handling.

Although the invention has been set forth in detail various modifications may be resorted to within the scope of the appended claims without departing from the spirit or sacrificing any of the advantages of the invention,

Having thus described our invention what we claim and desire to protect by Letters Patent is 1. A new material for articles of footwear comprising, a sheet of felted material, and a stiffening composition of resin, oxidizable oil and a drier incorporated therewith for rendering it transpiratory.

new material for articles of wearing apparel of the kind mentioned comprising a felted material having dyed fibers and a stiffening composition covering the fibers and dye and forming a protective coating for the dye without affecting" the appearance thereof and comprising! resin, linseed drier.

Signed at Montreal, Can., this 15th day of March, 1918.

- WILLIAM B. WIEGAND.

WALTER UFFELMAN.

oil, and a 

